EP1967688A2 - Support d'échelle - Google Patents

Support d'échelle Download PDF

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Publication number
EP1967688A2
EP1967688A2 EP20080250806 EP08250806A EP1967688A2 EP 1967688 A2 EP1967688 A2 EP 1967688A2 EP 20080250806 EP20080250806 EP 20080250806 EP 08250806 A EP08250806 A EP 08250806A EP 1967688 A2 EP1967688 A2 EP 1967688A2
Authority
EP
European Patent Office
Prior art keywords
pole
ladder
securing
support
control means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20080250806
Other languages
German (de)
English (en)
Inventor
Adam Warren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rapid Rail International Ltd
Original Assignee
Rapid Rail International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rapid Rail International Ltd filed Critical Rapid Rail International Ltd
Publication of EP1967688A2 publication Critical patent/EP1967688A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/06—Ladders for resting against objects, e.g. walls poles, trees in one piece

Definitions

  • the present invention relates to a ladder support.
  • Extra stabilising legs may be useful for applications such as decorating and the like where space is not an issue, however, the additional space required to accommodate the stabilising legs is often not available in other circumstances and such additional leg arrangements are cumbersome and unwieldy to handle.
  • attachment devices provided at the top of the ladder to secure the ladder in place typically require that an individual climbs up the ladder (whilst the ladder is unsecured) before being able to operate the attachment device to secure the ladder in place. The attachment device must then be detached from the vertical surface and the user dismount from the ladder whilst the ladder is in an unsecured state.
  • the present invention seeks to address the problems of the prior art.
  • a first aspect of the present invention provides a support for securing a ladder to an anchored pole, the support comprising:
  • a ladder may be provided with such a support and the support used to engage with an anchored pole, such as a telegraph pole or the like, with which the ladder is to be used such that when the pole securing means moved to a closed configuration the ladder is secured in engagement with the pole.
  • Achieving such securing of the ladder relative to the pole is achieved on application of a predetermined force to the control means.
  • the pole securing means may be moved into a closed configuration on application of a minimum predetermined force to the control means.
  • the control means may be arranged such that the predetermined force is applied in any desired direction.
  • the control means is operable to move the pole securing means between the open and closed configurations on application of a predetermined force to the control means, such force being applied in a downwards direction.
  • the support further comprises retention means coupled to the pole securing means and adapted for engagement with the pole, wherein on application of force to the control means, the retention means is movable towards the pole.
  • the control means may be operable to move the retention means into contact with the pole on application of a further predetermined force to the control means. In this way, application of sufficient force to the control means will result in the retention means making contact with the pole and thus frictional forces will come into play between the pole and the retention means preventing the ladder from slipping relative to the pole.
  • the retention means may comprise protrusions adapted for engagement with the pole.
  • Such protrusions may comprise teeth-like members or multi-pronged abutments which will become partially embedded within the surface of the pole thereby securing fixing the support (and thus the ladder) in place relative to the pole.
  • the retention means may comprise a cam or any other suitable retention means known to the skilled person and adapted for frictional engagement with the pole on application of said further predetermined force to the control means.
  • the retention means is operable to prevent substantially vertical slipping of the ladder relative to the pole, for example as a result of the feet of the ladder slipping in a direction away from the base of the pole.
  • the engagement of the retention means and pole prevents further slipping from occurring, the degree of slipping that is possible before the retention means engages the pole being minimised as the retention means has already been moved towards the pole on application of sufficient force to move the pole securing means between the open and closed configurations.
  • the pole receiving means may comprise any suitable means which when combined with the pole securing means is sufficient to retain the pole therein.
  • the pole receiving means may define an open channel such as a U-shaped channel or the like of sufficient dimensions to receive a pole therein.
  • the pole securing means may be moveable between an open configuration in which the open channel is unobstructed and a closed configuration in which the pole securing means obstructs the opening in the channel.
  • the pole securing means is biased towards the open configuration.
  • the control means may be operable from the base of the ladder to move the pole securing means between the open and closed configurations. This has the advantage that a user may operate the control means to move the pole securing means into the closed configuration thereby retaining the pole within the pole receiving means before climbing the ladder. Thus, the user need not use the ladder until the ladder has been fully secured in place with respect to the pole.
  • the control means may be a manually operable cable.
  • the ladder in use the ladder may be leaned against a pole such that the pole is received within the pole receiving means. The use may then pull downwards on the cable to move the pole securing means from an open to a close configuration, thereby retaining the pole within the pole receiving means. The ladder is now secured in place and the user may begin climbing the ladder. As a further safety precaution, the user should secure the end of the cable distal to the securing means to a jam cleat or the like, for example provided towards the base of the ladder.
  • the ladder is prevented from slipping off the pole during the fall of the user as the pole is securely retained within the pole receiving means.
  • a further aspect of the present invention provides a support for securing a ladder to an anchored pole, the support comprising:
  • the support further comprises adjustment means mounted on the body and releasably secured to the body so as to allow adjustment of its distance from the pole retention means.
  • a further aspect of the present invention comprises a ladder comprising a support according to a first aspect of the present invention.
  • the support may be integral with the ladder, or alternatively, the support and ladder arrangement may comprise two or more separate components which are releasably engageable with each other.
  • a further aspect of the present invention comprises a method of securing a ladder in position relative to an anchored pole, the method comprising the steps of:
  • a further aspect of the present invention provides a method of arresting the fall of a person climbing a ladder, the method comprising the steps of:
  • the second predetermined force should be greater than the first predetermined force.
  • Support 10 is shown secured to a ladder 20 at an upper portion thereof, support 10 comprising pole receiving means in the form of a U-shaped member 30 which is dimensioned to allow a pole 40 to be received therein.
  • Pole securing means in the form of an arcuate member 50 is provided in engagement with U-shaped member 30 and is pivotable relative to U-shaped member 30 about pivot point 55 between an open configuration (shown in figures 1 to 4 ) and a closed configuration (shown in figure 8 ).
  • U-shaped member 30 In the open configuration, U-shaped member 30 is open and support 10 may be removed from pole 40, whereas when arcuate member 50 is in the closed configuration, the opening in U-shaped member 30 is closed by arcuate member 50 and support 10 cannot be simply removed from pole 40 using a sliding or lifting action.
  • a cam 60 is provided in engagement with arcuate member 50 and is pivotable with arcuate member 50 relative to U-shaped member 30 such that when arcuate member 50 is moved from an open to a closed configuration cam 60 is moved into frictional engagement with pole 40.
  • a cable or rope 70 is provided attached to the cam 60 and arcuate member 50 arrangement via a pulley or lever assembly 80 such that pivoting of the cam 60 and arcuate member 50 arrangement relative to U-shaped member 30 may be effected by the application of downward force on rope 70.
  • a ladder 20 is placed in position relative to pole 40 by arranging support 10 relative to pole 40 such that pole 40 is received within U-shaped member 30. Downward force is then applied to rope 70 to move arcuate member 50 about pivot point 55 from an open configuration to a closed configuration where arcuate member 50 closes the open side of U-shaped member 30, thereby retaining pole 40 within U-shaped member 30.
  • a user would typically retain pole 40 within U-shaped member 30 by operating rope 70 to close the open side of U-shaped member 30 using arcuate member 50 thereby securing ladder 20 in place relative to pole 40.
  • the user would then attach rope 70 to a jam cleat or the like located adjacent lower portion of ladder 20 before attaching themselves to the rope by means of a conventional rope-grab or the like before climbing ladder 20. Therefore, in the event that the user falls from ladder 20, the fall of the user would be arrested thereby exerting further downward force on rope 70 and moving cam 60 into frictional engagement with pole 40 and further securing ladder 20 in place relative to pole 40.
  • Support 110 comprises a body 111 on which ladder engagement means 112 adapted for engagement with a ladder 20 (not shown) in mounted.
  • the ladder engagement means 112 may comprises any suitable means of releasably securing the support 110 to the ladder 20.
  • the ladder securing means 112 comprises engagement portions 114 which, in use, extend around at least a portion of a rung of a ladder 20 in order to mount the support 110 on the ladder 20.
  • An arcuate member 150 is provided on body 110 and is pivotable relative to body 111 about pivot point 155 between an open configuration and a closed configuration.
  • the support shown in figures 11 to 13 is shown in the closed configuration.
  • a cam 160 is provided in engagement with arcuate member 150 and is pivotable with arcuate member 50 relative to body 111 such that when arcuate member 150 is moved from an open to a close configuration cam 160 is moved into frictional engagement with pole 140.
  • a cable or rope 170 (not shown) is provided attached to the cam 160 and arcuate member 150 arrangement via a pulley or level assembly 180 such that pivoting of the can 160 and arcuate member 150 arrangement relative to body 111 may be effected by the application of downward force on rope 170.
  • Adjustment member 115 is further provided with an extended portion 117 for contacting a portion of the surface of the pole 40 in use. Extended portion 117 extends away from body and is angled so as to extend towards cam 160.
  • the adjustment member 115 is moved in to the desired position relative to body 111 and secured in place, the desired position being selected in dependence upon the pole to be received between the body 111, extended portion 117 and cam 160.
  • the ladder 120 is moved into position relative to pole 140 by arranging support 110 relative to pole 140 such that pole 140 is received between body 111, extended portion 117 and cam 160. Downward force is then applied to rope 170 (not shown) to move arcuate member 150 about pivot point 155 from an open configuration to a closed configuration thereby bringing cam 160 into frictional contact with pole 140.
  • Cam 160 is retained in frictional contact with pole 160 by securing the rope 170 (not shown) to a jam cleat or the like located adjacent lower portion of ladder 120. Due to the angle at which extended portion 117 extends away from body 111, pole 140 is securely frictionally engaged between body 111, extended portion 117 and cam 160. Thus, ladder 120 (not shown) is securely held in place relative to pole 140.
  • support 10, 110 may be provided integrally with ladder 20 at the point of manufacture or may be supplied separately and retrofitted to ladder 20.
  • the present invention provides a means of securing a ladder in place relative to an anchored pole before a user uses the ladder, as well as providing a fall arrest system for breaking the fall of a user who falls from the ladder during use.
  • cam 60 could be replaced with an arrangement having multi-pronged abutments for engagement with the pole on application of further force to move the abutments into frictional engagement with the pole.
  • the abutments may be of different sizes to allow a single support to accommodate secure engagement with poles of various dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP20080250806 2007-03-08 2008-03-10 Support d'échelle Withdrawn EP1967688A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0704545A GB0704545D0 (en) 2007-03-08 2007-03-08 Ladder support

Publications (1)

Publication Number Publication Date
EP1967688A2 true EP1967688A2 (fr) 2008-09-10

Family

ID=37988653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080250806 Withdrawn EP1967688A2 (fr) 2007-03-08 2008-03-10 Support d'échelle

Country Status (2)

Country Link
EP (1) EP1967688A2 (fr)
GB (2) GB0704545D0 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104727729A (zh) * 2013-12-20 2015-06-24 国家电网公司 蹬杆梯
USD838388S1 (en) 2017-11-13 2019-01-15 Werner Co. Pole grab
US10415311B2 (en) 2017-11-13 2019-09-17 Werner Co. Pole grab and ladder including the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3004512T3 (da) 2013-06-05 2021-11-22 Od Tech Pty Ltd Stigesikkerhedsmekanismer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593852B1 (fr) * 1986-02-05 1990-06-15 Anaplastiki Ltd Dispositif de securite pour l'appui d'echelles et d'echafaudages sur des poteaux arbres, colonnes, ou facades d'edifices
FR2740507B1 (fr) * 1995-10-31 1997-12-05 Dupuy Didier Dispositif de securite pour echelle et echelle equipee d'un tel dispositif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104727729A (zh) * 2013-12-20 2015-06-24 国家电网公司 蹬杆梯
USD838388S1 (en) 2017-11-13 2019-01-15 Werner Co. Pole grab
US10415311B2 (en) 2017-11-13 2019-09-17 Werner Co. Pole grab and ladder including the same

Also Published As

Publication number Publication date
GB2447359A (en) 2008-09-10
GB0804451D0 (en) 2008-04-16
GB0704545D0 (en) 2007-04-18

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